🗣️ Thai Text-to-Speech (TTS)

🗣️ ระบบแปลงข้อความภาษาไทยเป็นเสียงพูด

Welcome to Thai Text-to-Speech API, an AI product developed by iApp Technology Co., Ltd. Our API converts Thai and English text into natural-sounding speech with high accuracy and speed. The service supports mixed Thai-English sentences and offers multiple voice options.

Try Demo

Visit our API Portal to test the Text to Speech API with your own text.

Getting Started

Prerequisites
- An API key from iApp Technology
- Text input in Thai and/or English
- Maximum text length: No specific limit
- Supported output format: MP3
Quick Start
- Fast processing (less than 1 second)
- Natural speech generation
- Support for Thai-English mixed text
Key Features
- Natural speech synthesis
- Mixed language support (Thai-English)
- Emoji support
- Number, date, and currency value conversion
- Multiple voice options
- Fast processing time
Security & Compliance
- GDPR and PDPA compliant
- No data retention after processing

How to get API Key?

Please visit API Portal to view your existing API key or request a new one.

Code Examples

Sample Request:

เสียงเด็กผู้ชายน้องไข่ต้ม

curl --location --request GET 'https://api.iapp.co.th/thai-tts-kaitom/tts?text=สวัสดีครับ'
    --header 'apikey: {YOUR_API_KEY}'

เสียง คุณซี ฉัตรปวีณ์ ตรีชัชวาลวงศ์ (@ceemeagain)

curl --location --request GET 'https://api.iapp.co.th/thai-tts-cee/tts?text=สวัสดีค่ะเสียงซีสังเคราะห์มาแล้วค่ะ'
    --header 'apikey: {YOUR_API_KEY}'

Sample Response:

Audio file output (MP3 format). The output audio file can be previewed as below:

เสียงเด็กผู้ชายน้องไข่ต้ม
เสียง คุณซี ฉัตรปวีณ์ ตรีชัชวาลวงศ์ (@ceemeagain)

note

Replace the text parameter in the URL with your desired text to preview different audio outputs. You'll need to add your API key as a header to make it work.

Features & Capabilities

Core Features

Natural speech generation
Mixed Thai-English text support
Emoji conversion
Number and date formatting
Multiple voice options
Fast processing

Supported Fields

Thai text
English text
Emojis
Numbers
Dates
Currency values

API Reference

Text-to-Speech Endpoint (Kaitom Voice)

Endpoint: GET https://api.iapp.co.th/thai-tts-kaitom/tts
Required Parameters:
- apikey: Your API key (header)
- text: Text to convert to speech (query)

Text-to-Speech Endpoint (Cee Voice)

Endpoint: GET https://api.iapp.co.th/thai-tts-cee/tts
Required Parameters:
- apikey: Your API key (header)
- text: Text to convert to speech (query)

Code Examples

Python

    import requests

    url = "https://api.iapp.co.th/thai-tts-kaitom/tts"
    headers = {"apikey": "YOUR_API_KEY"}
    params = {"text": "สวัสดีครับ"}

    response = requests.get(url, headers=headers, params=params)
    with open("output.mp3", "wb") as f:
        f.write(response.content)

JavaScript

const axios = require("axios")
const fs = require("fs")

let config = {
    method: "get",
    url: "https://api.iapp.co.th/thai-tts-kaitom/tts",
    params: { text: "สวัสดีครับ" },
    headers: { apikey: "YOUR_API_KEY" },
    responseType: "arraybuffer",
}

axios(config)
    .then((response) => {
        fs.writeFileSync("output.mp3", response.data)
    })
    .catch((error) => console.log(error))

PHP

    <?php
    $url = "https://api.iapp.co.th/thai-tts-kaitom/tts?text=สวัสดีครับ";
    $headers = array('apikey: YOUR_API_KEY');

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $response = curl_exec($ch);
    file_put_contents("output.mp3", $response);
    curl_close($ch);
    ?>

Swift

import Foundation

let url = URL(string: "https://api.iapp.co.th/thai-tts-kaitom/tts?text=สวัสดีครับ&apikey={YOUR_API_KEY}")!
var request = URLRequest(url: url, timeoutInterval: Double.infinity)
request.httpMethod = "GET"

let task = URLSession.shared.dataTask(with: request) { data, response, error in
    guard let data = data else {
        print("Error:", String(describing: error))
        return
    }

    // Save the data to an MP3 file
    let fileManager = FileManager.default
    let outputPath = fileManager.temporaryDirectory.appendingPathComponent("output.mp3")

    do {
        try data.write(to: outputPath)
        print("Audio file saved to:", outputPath.path)
    } catch {
        print("Failed to save file:", error)
    }
}

task.resume()

Kotlin

import okhttp3.OkHttpClient
import okhttp3.Request
import java.io.File
import java.io.FileOutputStream

fun main() {
    val client = OkHttpClient()

    val request = Request.Builder()
        .url("https://api.iapp.co.th/thai-tts-kaitom/tts?text=สวัสดีครับ&apikey={YOUR_API_KEY}")
        .build()

    val response = client.newCall(request).execute()

    if (response.isSuccessful) {
        // Get response body as bytes
        val responseBody = response.body?.bytes()

        if (responseBody != null) {
            // Save to a file
            val outputFile = File("output.mp3")
            FileOutputStream(outputFile).use { fos ->
                fos.write(responseBody)
                println("Audio file saved to: ${outputFile.absolutePath}")
            }
        } else {
            println("Response body is empty.")
        }
    } else {
        println("Request failed with status code: ${response.code}")
    }
}

Java

import okhttp3.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

public class Main {
    public static void main(String[] args) throws IOException {
        OkHttpClient client = new OkHttpClient().newBuilder()
                .build();
        MediaType mediaType = MediaType.parse("text/plain");
        RequestBody body = RequestBody.create(mediaType, "");
        Request request = new Request.Builder()
                .url("https://api.iapp.co.th/thai-tts-kaitom/tts?text=สวัสดีครับ&apikey={YOUR_API_KEY}")
                .method("GET", body)
                .build();
        Response response = client.newCall(request).execute();

        if (response.isSuccessful()) {
            // Get the response body as bytes
            byte[] responseBody = response.body().bytes();

            // Save the response to a file
            File outputFile = new File("output.mp3");
            try (FileOutputStream fos = new FileOutputStream(outputFile)) {
                fos.write(responseBody);
                System.out.println("Audio file saved to: " + outputFile.getAbsolutePath());
            } catch (IOException e) {
                System.err.println("Failed to save the file: " + e.getMessage());
            }
        } else {
            System.err.println("Request failed with status code: " + response.code());
        }

        // Close the response
        response.close();
    }
}

Dart

import 'dart:io';
import 'package:http/http.dart' as http;

void main() async {
  // Create the GET request
  var request = http.Request(
    'GET',
    Uri.parse(
        'https://api.iapp.co.th/thai-tts-kaitom/tts?text=สวัสดีครับ&apikey={YOUR_API_KEY}'),
  );

  // Send the request
  http.StreamedResponse response = await request.send();

  if (response.statusCode == 200) {
    // Save the response to a file
    final file = File('output.mp3');
    final bytes = await response.stream.toBytes();
    await file.writeAsBytes(bytes);

    print('Audio file saved to: ${file.path}');
  } else {
    print('Request failed: ${response.reasonPhrase}');
  }
}

Limitations and Best Practices

Limitations

Thai and English language support only
Two voice options available:
- Kaitom (male voice)
- Cee (female celebrity voice)

Best Practices

Use proper punctuation
Keep sentences natural and conversational
Test with small text segments first
Consider context for natural speech flow

Accuracy & Performance

Overall Accuracy

Natural speech quality
Accurate pronunciation for both Thai and English
Proper handling of numbers and special characters

Processing Speed

Less than 1 second per request
Consistent performance regardless of text length

Factors Affecting Quality

Text formatting
Punctuation
Language mixing
Special character usage

History

Version 2.1 (October 2020)

Added Kaitom male voice option
Improved speech naturalness

Version 2.0 (September 2020)

Implemented Deep Learning-based synthesis
Added Thai-English mixed language support
Improved overall speech quality

Version 1.0 (February 2020)

Initial release with HMM-based synthesis
Thai language only support

Pricing

AI API Service Name	Endpoint	IC Per Characters	On-Premise
Thai Text To Speech (TTS)	iapp_text_to_speech_v1_cee	1 IC/400 Characters	Contact
Thai Text To Speech (TTS)	iapp_text_to_speech_v1_kaitom	1 IC/400 Characters	Contact

Getting Started​

Code Examples​

Sample Request:​

Sample Response:​

Features & Capabilities​

Core Features​

Supported Fields​

API Reference​

Text-to-Speech Endpoint (Kaitom Voice)​

Text-to-Speech Endpoint (Cee Voice)​

Code Examples​

Python​

JavaScript​

PHP​

Swift​

Kotlin​

Java​

Dart​

Limitations and Best Practices​

Limitations​

Best Practices​

Accuracy & Performance​

Overall Accuracy​

Processing Speed​

Factors Affecting Quality​

History​

Version 2.1 (October 2020)​

Version 2.0 (September 2020)​

Version 1.0 (February 2020)​

Pricing​

Getting Started

Code Examples

Sample Request:

Sample Response:

Features & Capabilities

Core Features

Supported Fields

API Reference

Text-to-Speech Endpoint (Kaitom Voice)

Text-to-Speech Endpoint (Cee Voice)

Code Examples

Python

JavaScript

PHP

Swift

Kotlin

Java

Dart

Limitations and Best Practices

Limitations

Best Practices

Accuracy & Performance

Overall Accuracy

Processing Speed

Factors Affecting Quality

History

Version 2.1 (October 2020)

Version 2.0 (September 2020)

Version 1.0 (February 2020)

Pricing